Sharp qt cd 131 h service manual

Page 1

QT-CD131H/132H

SHARP SERVICE MANUAL

No. $8871QTCD131 H

QT-CD131 H
QT-CD132H

Illustration: QT-CD132H - In the interests of user-safety the set should be restored to its
COMPACT original condition and only parts identical to those specified should

MDSB 5
- Note for users in UK

DIGITAL AUDIO . . .

Recording and playback of any material may require consent
which SHARP is unable to give. Please refer particularly to the
provisions of Copyright Act 1956, the Dramatic and Musical
Prefomers Protection Act 1956, the Preformers Protection Acts
1963 and 1972 and to any subsequent statutory enactments and
orders.

/ CONTENTS \

SAFETY PRECATION FOR SERVICE MANUAL ............
IMPORTANT SERVICE NOTES (131R FOR UK ONLY)
SPECIFICATIONS
NAMES OF PARTS .
DISASSEMBLY ........
REMOVING AND REINSTALLING THE MAIN PARTS
ADJUSTMENT ,,,,,,
BLOCK DIAGRAM
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD
NOTES ON SCHEMATIC DIAGRAM
TYPES OF TRANSISTOR .......
WAVEFORMS OF CD CIRCUIT ..
TROUBLESHOOTING (CD SECT ) .
FUNCTION TABLE OF IC ......................
PARTS GUIDE/EXPLODED VIEW

PACKING METHOD (131H FOR UK ONLY)

\ /
DIFFERENCE BETWEEN QT-CD131H AND QT-CD132H
QT-CD131 H OT-CD132H
SURROUND X 0

-
This document has been published to be used

SHARP CORPORATION tor atter sales service only.

The contents are subject to change without notice.

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QT-CD131H/132H

SAFETY PRECATION FOR
SERVICE MANUAL

Precaution to be taken when replacing and servicing the
Laser Pickup.

The ael (ACCESSIBLE EMMlSSION LEVEL) of the laser
power output is less than class 1 but the laser component is
capable of emitting radiation exceeding the limit for class 1.
Therefore it is important that the following precautions are
observerduringservicingtoprotectyoureyesagainstexposure
to the laser beam.

(1) When the cabinet is removed, the power is turned on
without a compact disc in position and the pick-up is on the
outer edge the laser will light for several seconds to detect
a disc. Do not look into the pick-up lens.

(2) The laser poweroutputofthe pick-up unitand replacement
service parts are all factory preset before shipment.

Do not attempt to readjust the laser pick-up unit during
replacement or servicing.

(3) Under no circumstances stare into the pick-up lens at any
time.

(4) CAUTION-USE of controlsoradjustments, orpereformance
of procedures otherthan those specified herein may result
in hazardous radiation exposure.

(131 H For UK)

CLASS 1 LASER PRODUCT
APPAREIL A LASER DE CLASSE l
PRODUCTU LASER DE CLASE l

(131 H Except for UK/132H)

CLASS 1 LASER PRODUCT
APPAREIL A LASER DE CLASSE l
PRUDUCTO LASER DE CLASE l

LASER KLASSE1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
LASER TRiDY 1
LASER TRIEDY 1

Laser Diode Properties
Material: GaAlAs

Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW

(AUTlt)erN\4I.SlELE LASER mummy WHEN arm in mr STARE rm)
BEAM or: ViEw bikEmv wm-i or'rimL iNsTkuMEws

mummy intro Ltsizksrruumo NAR DEVNA DEL Ax (\HNAD 57mm
E! |.\ TKALEN can EEanm FJ STRALEN MED OWISKA lNflRKTMENT

ADHERXELUSVNLII. LASFRXIKAUNI. VED [\BVIM. SE in}; AM) i
3110me HELLER |KKE MED 0mm: lNSmUMENTEk

om mum mum L\sEks:\1EILVIiE
TEESEEN .xmm KArsu srr em LAl'lTEEN mm

VARNNK: osYNLlonSEksTMDINn w mm m1 [\k ammo

mm FJIN I mm «a swarm El mum mom 0mm

x

L\SE|<§1K , . «k DEKSEL Arm smim
ELLER 3E DIREKHE MED oirrisKE NsTkLME\TER

VAROITUS! LAITIEEN KAYTTAMINEN
myULLA KUIN TASSA
KAYTTOOHJEESSA MAINITULLA
TAVALLAsAATTAA ALTISTAA
KAYTleJHAN TUBVALLisuusL_u0KAN1
YLITTAVALLE NAKYMATTOMALLE
LASERSATEILYLLE.

VARNING - Ollll ARPARATEN ANVANDs
PA ANNAT SATT AN l DENNA
BRUKSANVISNING sPECIFicERAs. KAN
ANVANDAREN UTSATTASNFOH OSYNLIG
LAsERSTRALNING, sour OVERSKRIDER
GHANSEN FOR LASERKLASS 1.